I did not see that error code on Canons web site. It may have something to do with the laser or a pinched wire with one of the lasers. Also, which color is giving you a E020 code? It may have something to do with the other.

EO20-0181 = magenta developer toner level faulty you can reset it but you have to check the black density sensor is not soiled and there is no toner scattering inside the machine. If you need more help please get back to me i am in the uk 00447764303923EO20-0181 = magenta developer toner level faulty you can reset it but you have to check the black density sensor is not soiled and there is no toner scattering inside the machine. If you need more help please get back to me i am in the uk 00447764303923

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Error code E 020 0181 means that the patch sensor has turned bad or is dirty, to access this try removing eac dev unit and gently unscrew each top so that the patch sensor window is visible. Also, check whether the toner hopper is overfull, it happens sometimes that the toner motor worm gear splits as a result of the hopper becoming packed tight. This may cause the worm gear to split and break if the hopper is 1/2 full or less. You may need to replace toner motor, part number (FH7-1762-030). If the toner motor is fine, then check whether the web solenoid is activating. Clean the web solenoid and ensure free action. This would clear error E020. If the error still not disappears then make sure that the DC controller is fine and the connections from the controller are fine.

E020 indicates a Black Toner malfunction. If you've recently changed the toner and failed to distribute the toner by gently shaking it from side to side, this could be the cause of this error or if the toner is very low it could trigger the same error.01B0 is a drum error related to your toner error message. If toner cartridge is good, remove the cartridge, clean the drum, replace the cartridge and both errors should clear. A dirty drum will also trigger your 1st error e020.

Hello Brass, This error code means that the yellow drum/developer unit has failed. Your machine has 4 drums, cyan,magenta,yellow and black. At best they are good for about 40,000 copies. You can order one online and it is fairly simple to replace. Let me know if I can help further.